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A passenger arriving from Nigeria disclosed to officials at the Houston airport that she had some dried beef in her luggage. What she didn’t declare were the 15 giant African land snails, fresh leaves, and a quarter-pound of beef that were also in her baggage. The snails are illegal to own in the U.S. without a permit and can cause meningitis in humans but are considered a delicacy in West Africa. The snails were confiscated and handed over to the USDA.